package com.visualization.server.service;



import com.visualization.server.entities.User;

import java.util.List;

public interface UserService {

    //增
    Integer  addUser(User user);
    //删
    Integer deleteUser(User user);
    //改
    Integer updateUser(User user);
   //查：通过ID查
    User getUserById(Integer id);


    List<User> getUserList();
}
